I loved the story in this one. The intensity of a villain like Sirius Black on the loose, mixed with a dose of Lord Voldemort, and the excitement was page-turning! Plus I felt more adventure in this one with the tournament Harry had to participate in.
It was sad to see death in this one, but it is imminent after all so I shouldn't have been surprised. And yet I was.
Get onto reading this series if you haven't already. Seriously.